TY - Journal of Ecology and Rural Environment A1 - SHI Peng-fei, ZHENG Yuan-yuan, YANG Dong-yu, DANG Jing, WANG Gui-yan T1 - Estimation of Greenhouse Gas Emissions in Scaled Crop-Livestock Integrated Farms in North China Plain Y1 - 2017-03-25 JF - Journal of Ecology and Rural Environment JO - Journal of Ecology and Rural Environment SP - 207 EP - 214 VL - 33 IS - 3 UR - http://www.ere.ac.cn N1 - 10.11934/j.issn.1673-4831.2017.03.003 ER -